The Unsavory Adjective

The word savory usually describes food that is like salty and buttery and tasty, right? Not sweet, not bitter, but savory. So unsavory describes things or people that are unpleasant. This could be so confusing for someone learning English if they assume it's the opposite of savory. We don't really describe food as unsavory. If it's not salty or like sweet that doesn't mean the same thing, right? This has a very specific meaning of something that's unpleasant, usually talking about someone's morals,. Sometimes yeah, could trip you up if you're not aware that this is almost like a false? What's the word? Not a false cognate